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What is a normal heart rate?

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At rest, a normal heart beats around 50 to 90 times a minute. Exercise, emotions, anemia, an overactive thyroid, fever, and some medications can cause your heart to beat faster, sometimes to well over 100 beats per minute.

From: How Your Heart Works WebMD Medical Reference

SOURCE: National Heart Blood Lung Institute, National Institutes of Health.

Reviewed by James Beckerman on November 08, 2017

SOURCE: National Heart Blood Lung Institute, National Institutes of Health.

Reviewed by James Beckerman on November 08, 2017

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What is essential or primary hypertension?

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